CONTEXT INFORMATION COLLECTION NETWORK, CONTEXT INFORMATION SERVER AND CONTEXT INFORMATION COLLECTION METHOD

摘要

PROBLEM TO BE SOLVED: To provide a context information collection network, a context information server and a context information collection method by which various contexts of a user are acquired without increasing equipment or costs.

SOLUTION: The context information collection network is provided with a context information server 12 having a context information database 20 which stores context information received by a communication part by every user, secondary context information retrieval systems 14A, 14B which retrieve secondary context information relevant to primary context information received from the context information server 12 based on the primary context information and transmit the retrieved secondary context information to the context information server 12 and a content information distribution server 16 which stores the content information.

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